[OT] Alarm which sounds if briefcase is opened?

[Zak]

Is it possible to get an alarm which sounds if the catch of my briefcase is opened while I am out of the room during a meeting?

I use a soft briefcase like this one:

thoughts so far:

When I have to leave my case unattended maybe I could loop a thin enamelled wire over some part of the catch so that the wire would get snapped when the catch was undone. It's not a great way and I'm looking for something better.

Could some sort of window-catch burglar alarm (with a contact and a magnet or whatever) be used?

Inside the case I would need a portable but loud alarm sounder which would respond to a broken circuit. Are there any off-the-shelf products which would do this?

[Lostgallifreyan]

Zak wrote in news:Xns98B9C787D946C64A18E@127.0.0.1:

On the assumption that anyone opening is trying to see inside, they need light, either ambient or brought with them. So you could try a light sensor.

[Hippy]

Zak made the point of:

One of these personal attack alarms designed for people to carry in their pockets would do this. i use one on my shed. When I open the shed door, I have to open it only a foot or so and unhook the pin otherwise when the door is opened fully, the pin comes out and the alarm is triggered. You can pick them up for a few quid, There was even a site offering them free a few weeks back.

[Bob Eager]

Battery operated wired shed alarm.

[Joerg]

Maybe the one Spehro mentioned in another thread. Wire up one of those "That was easy!" buttons. At least that would create utter embarrassment to the person who dunnit :-)

[Keith]

In message , Zak writes

Poundland has window alarms operated by magnet & reed switch. Fix the two parts so they separate when the case is opened. Seriously noisy and very small, you'll probably get them in the 'sheds' too.

[Odie Ferrous]

Just wire up a couple of pounds of TNT inside the case to a detonator that activates a few seconds after opening. Chances are, no-one would ever go near your briefcase again!

Odie

[John Stumbles]

Learnings of cultural Borat make glorious benefit keep chicken in briefcase make all know if opened.

[Cicero]

=============================== It depends on what you're trying to do. If you only want to *prevent* someone opening your briefcase just fit a lock.

On the other hand if you want to catch someone in the act then you could probably adapt a car door courtesy switch with battery and buzzer (see

to do the job.

A more subtle approach might be to treat your briefcase with one of those invisible powders which can only be seen by ultra violet light / special glasses. Anyone handling your briefcase would have stained hands and you would be able to see the culprit.

Cic.

[The Medway Handyman]

Personally I'd get a new job. Why on earth are you working with people who might open your briefcase as soon as you leave the room??

[Owain]

Be rather messy if it lays an egg, though.

Personally, I think something involving a tesla coil with its outputs attached to various rivets on the case would be interesting.

Owain

[andy]

In message , Zak muttered:

[Stuart]

Could you not rig up a panic alarm so that the pin gets pulled out when the case is opened .That would frighten the French all right .

lol

[Adrian C]

Vibration operated alarm kit

-- Adrian C

[Michael A. Terrell]

Limit the current to keep from killing them, and put a big, "Do not open" label on it to make sure they can't resist opening it. ;-)

[Mike H]

"The Medway Handyman" wrote

Might not be an internal meeting. Clients? Suppliers?

- Mike

[ric]

well, if you're going to buy toys, then why not go for this puppy? doubt it's legal, mind!

there are *loads* of people selling exactly what you really want: - 10 bucks.

ric

[Zak]

Interesting web site. Do you have links to any more like it?

[Zak]

They are the other party in what is probably going to be a claim and counterclaim.

[Keith]

In message , andy writes

security....